EP 0525591 A1 19930203 - Plug for molten metal refining vessel.
Title (en)
Plug for molten metal refining vessel.
Title (de)
Gasspülstein für ein Gefäss zum Feinen von geschmolzenem Metall.
Title (fr)
Brique pour l'introduction de gaz dans un récipient à affiner le métal en fusion.
Publication
Application
Priority
JP 6728691 U 19910729
Abstract (en)
A plug (A) for a molten metal refining vessel, which comprises: a plug body (1) to be releasably attached to an opening provided in a wall of a molten metal refining vessel, the plug body comprising a non-porous refractory with a porosity of up to 20%; and a plurality of gas blowing apertures (2) formed in the plug body (1) and running through the plug body (1) in the axial direction thereof. Each of the above-mentioned plurality of gas blowing apertures (2) comprises a slit, and the slit has substantially a rectangular shape having a length of the shorter side thereof within a range of from 0.08 to 0.25 mm. Each gas blowing aperture (2) should preferably have a cross-sectional area of at least 2 mm<2>, and the total amount of the cross-sectional areas of the plurality of gas blowing apertures (2) should preferably be limited to up to 20% relative to the area of the upper end face of the plug body (1).
IPC 1-7
IPC 8 full level
C21C 7/072 (2006.01); B22D 1/00 (2006.01); C04B 38/06 (2006.01)
CPC (source: EP)
B22D 1/005 (2013.01); C04B 38/065 (2013.01)
Citation (search report)
- [X] DE 3907500 C1 19900823
- [Y] US 3539667 A 19701110 - NAMEISHI NAOYUKI
- [Y] EP 0311785 A1 19890419 - SCHMITZ PA HA GE
- [A] DE 3820611 A1 19891221 - BURBACH & BENDER OHG [DE]
- [A] DE 1646424 A1 19710624 - BASF AG
- [A] EP 0146079 A2 19850626 - ARBED [LU]
- [AD] US 4266970 A 19810512 - IWAOKA SHOJI, et al
- [A] PAUL G., KLAN W., HOFFGEN H.: "BETRIEBSERFAHRUNGEN MIT GASSPULSTEINEN MIT GERICHTETER POROSITAT BEI DEN BADISCHEN STHALWERKEN AG.", RADEX RUNDSCHAU, GRAEFELFING, DE, no. 01., 1 January 1987 (1987-01-01), DE, pages 288 - 302., XP000106570
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0525591 A1 19930203; CA 2073811 A1 19930130; CA 2073811 C 19960528; JP H0510443 U 19930209
DOCDB simple family (application)
EP 92112448 A 19920721; CA 2073811 A 19920714; JP 6728691 U 19910729